AF signs before BFP

I'm 13dpo and for the past 2 days I've had period signs (lower backache, dull ache in vulva and bottom) normally I only get them a few hours before AF shows her face, I did have a small amount of pink tinge in my CM this afternoon when I wiped, not sure if this means anything🤷🏼‍♀️ did anyone experience the same thing before they got there BFP?

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